Why it works: Rhubarb and flour match in chemistry and in kitchens. They rank in the top 7% of all ingredient pairs, and cooks put them together in 670 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Rhubarb or Pie-plant Pie
Ingredients
Directions
Wash the rhubarb, remove the skin, and slice it thinly.
Peel, core, and slice the apples.
Line a pie plate with crust and fill it with the rhubarb and apple.
Sprinkle ¾ cup of sugar, a few bits of butter, and 1 tablespoon of flour over the filling.
Cover with an upper crust, wet the edges of the bottom crust, and cut small slits in the top crust.
Press the top crust gently to the edges of the bottom crust and trim any overhanging portions.
Ensure the edges are well sealed to prevent juice from escaping.
Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
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Rhubarb + flourtop 7% of all pairsSmell alikestrongCooked together670 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Rhubarb + appletop 9% of all pairsSmell alikemoderateCooked together162 recipes
Shared aroma: methyl cinnamate (strawberry).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Apple + buttertop 14% of all pairsSmell alikemoderateCooked together8,706 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
Flour and butter barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
Swap the apple
How well each one fits the dish's main ingredients (rhubarb, sugar, flour, butter):
- Vanillafits better
- Raisinfits better
- Figfits better
- Applethe original
Fit is the average pairing score against rhubarb, sugar, flour, butter. Candidates are from the same food group and used in at least 100 recipes.
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